How Much Does TDP Effect Battery? Do Any Retailers Sell Intel "L" Series Processors? Please Help Me Pick A New Processor

I'm thinking up upgrading the processor in my Dell
M1330. Its current TDP is 35 watts as is the rest of the
T series. The L series look to use 17 watts. Various
ULV series are under 10 watts. And the Atom is only
2.5 watts but is way too slow (dual core might be better).

I'm wondering if I'll notice a difference in battery life between
the T series and L series. If I go with a 45nm T series I'll
get the 8100 or 8300 (the X9000 that I drool over and T9500/9300
are out of my price range) and if I go L series route I'll go with
the L7700 or possibly L7500.

I assume heat would be cut down between the T and L series. How
much of a performance difference is there between the L7700 and
the T8100? The L7700 sounds great if it isnt too slow. I do NO gaming
on my laptop except the odd game of solitaire I've got a powerful
desktop at home for anything that requires a lot of power.

The main thing I need is battery life and decent performance. I love
the X9000 but I wouldnt come close to utilizing its power on my laptop
so it would be a waste. It also wouldnt be worth it to me in terms up
battery life and heat output.

If the L7700 can perform similar to the T7xxx with less heat and power
draw, I'm sold.

I see a lot of articles talking about the TDP but it doesnt seem to make that
huge of a difference. The new MSI Wind with the 1.6ghz Atom (2.5 TDP)
and 3 cell battery gets under 3 hours per charge. My dell with a T7100
using 35 watts gets around 2.5 hours on a 4 cell battery. It would seem
that the battery life difference would be huge but it isnt the case. I'm
assuming display, drives, wifi, and etc., eat more power than the processor.

Now I'm narrowed down to the T8100, T8300, or L7700. Does the L7700
lag that much behind the T series in terms of power/performance? Would
the U7700 make any noticeable difference in my battery life?

Lastly, I can find T8xxx for sale at a lot of places but I've never found a
place that sells the L7xxx series processors (or U series processors for that
matter). Even if I decide to go with the T8xxx, where in the heck can I
buy an L7700?

Thank You Very Much To Anyone That Helps,

AndyG

 

L and ULV are soldered to the MoBo so no you can't yours is socket P. L are FCBGA6. TDP is not a measure of power draw it is a measure of heat that needs to be dissipated. While related to power draw not directly proportional.

 

Actually no matter what cpu you buy, they will all run equally hot.

Why is this?
Well the temoerature of your processor is based on the motherboard.
The fan on the heatsink will only come on when a thermal value has been reached, which is usually 140F. At this point the fan comes on low. When 160F is reached the fan will come on high.
When buying a processor, temperature is a thing to keep in mind but the difference between the wattages, is how long it takes to reach the point when the fan comes on.
Most people undervolt their processors here on the boards. What that does, is cut the excess power to your cpu, so that it does not need as much power, which means that it takes longer for the fan to come on. Also undervolting cuts the highest cpu voltage down, so under full load the cpu will run slightly cooler.

K-TRON

 

Thanks for the answers. I'll be going with the
T8xxx. Are there any tutorials around for undervolting
an M1330 with a T8xxx?

Thanks,

Andy

 

Yes, their is a tutorial, and it is called "the undervolting guide"

http://forum.notebookreview.com/showthread.php?t=235824

It is fairly straightforward and it is easy to do.

All you need is a copy of cpu rightmark or notebook hardware control.

The T8xxx is a good series of processors cause they are 45nm, so they are pretty power efficient.

I would look at the T8300 since it is the best bang for the buck processor at the moment.

Also, check the buy and sell section here, sometimes people have those T9500 processors for less than $300, so your dreams can be a reality

K-TRON